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Search Results: 1 - 10 of 81977 matches for " Rosa Maria Veiga; "
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Occurrence, population dynamics and habitat characterization of Mytella guyanensis (Lamarck, 1819) (Mollusca, Bivalvia) in the Paraíba do Norte river estuary
Nishida, Alberto Kioharu;Leonel, Rosa Maria Veiga;
Boletim do Instituto Oceanográfico , 1995, DOI: 10.1590/S0373-55241995000100004
Abstract: a survey of mytellaguyanensis occurrence and population dynamics were performed in the paraíba do norte river estuary. the characterization and the influence of temperature, salinity and substrate, as well as the associated fauna and flora on the population were also examined. mytella guyanensis lives buried in the substrate of the mangrove intertidal zone of the paraíba do norte river estuary, from the mouth to 24 km upriver. average annual density of this bivalve species was 5.2 individuals per m2, with a predominantly aggregated distribution. the most frequent size was between 4.5 and 5.5 cm in length. analysis of the substrate demonstrated the presence of two types of substrates in relation to the percentage of silt and clay and the water content. besides interfering in the population density, the substrate heterogeneity may be a decisive factor in aggregation. eight species of crustacean decapods and one bivalve species were identified as associated fauna.
Occurrence, population dynamics and habitat characterization of Mytella guyanensis (Lamarck, 1819) (Mollusca, Bivalvia) in the Paraíba do Norte river estuary
Nishida, Alberto Kioharu;Leonel, Rosa Maria Veiga;
Brazilian Journal of Oceanography , 1995, DOI: 10.1590/S1679-87591995000100004
Abstract: a survey of mytellaguyanensis occurrence and population dynamics were performed in the paraíba do norte river estuary. the characterization and the influence of temperature, salinity and substrate, as well as the associated fauna and flora on the population were also examined. mytella guyanensis lives buried in the substrate of the mangrove intertidal zone of the paraíba do norte river estuary, from the mouth to 24 km upriver. average annual density of this bivalve species was 5.2 individuals per m2, with a predominantly aggregated distribution. the most frequent size was between 4.5 and 5.5 cm in length. analysis of the substrate demonstrated the presence of two types of substrates in relation to the percentage of silt and clay and the water content. besides interfering in the population density, the substrate heterogeneity may be a decisive factor in aggregation. eight species of crustacean decapods and one bivalve species were identified as associated fauna.
Observa es sobre oviposi o, eclos o e tempo de vida de Triatoma matogrossensis Leite & Barbosa, 1953 (Hemiptera-Reduviidae) em fun o da alimenta o em pombos e coelhos
Marassá Ana Maria,Veiga-Barreiros Rosa Maria de O.,Moraes Roberto Henrique Pinto,Andrade Rute Maria Gon?alves de
Revista da Sociedade Brasileira de Medicina Tropical , 1998,
Abstract: Estudou-se em laboratório a influência de duas diferentes fontes de alimenta o sobre oviposi o, eclos o dos ovos e tempo de vida de casais de Triatoma matogrossensis. Foram observados 68 casais separados em quatro diferentes grupos, com 20, 12, 20 e 16 casais, respectivamente. Os grupos A1 e A 2 foram alimentados em pombos e os grupos C1 e C 2 em coelhos. Os casais foram mantidos em estufa a 26o ± 2oC e UR de 60-80%, com fotoperíodo de 14 horas. O maior número de ovos postos foi encontrado no grupo A1. N o houve diferen a na propor o de ovos eclodidos dos grupos alimentados em coelhos ou pombos. N o foram observadas diferen as de tempo de vida entre machos e fêmeas dos quatro grupos, entretanto o grupo A1 apresentou o maior tempo de sobrevivência e o grupo C2 o menor.
Observa??es sobre oviposi??o, eclos?o e tempo de vida de Triatoma matogrossensis Leite & Barbosa, 1953 (Hemiptera-Reduviidae) em fun??o da alimenta??o em pombos e coelhos
Marassá, Ana Maria;Veiga-Barreiros, Rosa Maria de O.;Moraes, Roberto Henrique Pinto;Andrade, Rute Maria Gon?alves de;Castillo, Abel;Corrêa, Fernando Motta de Azevedo;
Revista da Sociedade Brasileira de Medicina Tropical , 1998, DOI: 10.1590/S0037-86821998000400005
Abstract: a laboratory study was carried out concerning the influence of two kinds of blood-meal on egg laying, egg hatching and life span of triatoma matogrossensis. 68 couples in 4 different groups with 20, 12, 20 and 16 individuals of each sex per group were formed. maintained under laboratory conditions groups a1 and a2 were fed on pigeons and groups c1 and c2 were fed on rabbits. in relation to egg laying the best results were found in group a1. no differences on egg hatching were found between the groups fed on rabbits and those fed on pigeons. concerning the life span, no differences between males and females in the 4 groups were observed but group a1 presented the longest life span and group c2 the shortest.
Drug resistance associated genetic polymorphisms in Plasmodium falciparum and Plasmodium vivax collected in Honduras, Central America
Irina T Jovel, Rosa E Mejía, Engels Banegas, Rita Piedade, Jackeline Alger, Gustavo Fontecha, Pedro E Ferreira, Maria I Veiga, Irma G Enamorado, Anders Bjorkman, Johan Ursing
Malaria Journal , 2011, DOI: 10.1186/1475-2875-10-376
Abstract: Blood samples were collected from patients seeking medical attention at the Hospital Escuela in Tegucigalpa from 2004 to 2006 as well as three regional hospitals, two health centres and one regional laboratory during 2009. Single nucleotide polymorphisms in P. falciparum chloroquine resistance transporter (pfcrt), multidrug resistance 1 (pfmdr1), dihydrofolate reductase (pfdhfr) and dihydropteroate synthase (pfdhps) genes and in P. vivax multidrug resistance 1 (pvmdr1) and dihydrofolate reductase (pvdhfr) genes were detected using PCR based methods.Thirty seven P. falciparum and 64 P. vivax samples were collected. All P. falciparum infections acquired in Honduras carried pfcrt, pfmdr1, pfdhps and pfdhfr alleles associated with chloroquine, amodiaquine and sulphadoxine-pyrimethamine sensitivity only. One patient with parasites acquired on a Pacific Island had pfcrt 76 T and pfmdr1 86Y alleles. That patient and a patient infected in West Africa had pfdhfr 51I, 59 R and 108 N alleles. Pvmdr1 976 F was found in 7/37 and two copies of pvmdr1 were found in 1/37 samples. Pvdhfr 57 L + 58 R was observed in 2/57 samples.The results indicate that P. falciparum from Honduras remain sensitive to chloroquine and sulphadoxine-pyrimethamine. This suggests that chloroquine and sulphadoxine-pyrimethamine should be efficacious for treatment of uncomplicated P. falciparum malaria, supporting current national treatment guidelines. However, genetic polymorphisms associated with chloroquine and sulphadoxine-pyrimethamine tolerance were detected in local P. vivax and imported P. falciparum infections. Continuous monitoring of the prevalence of drug resistant/tolerant P. falciparum and P. vivax is therefore essential also in Honduras.In Honduras chloroquine is recommended for treatment of uncomplicated Plasmodium falciparum and Plasmodium vivax infection. In addition primaquine is used for treatment of P. falciparum gametocytes and P. vivax hypnozoites [1,2]. These drugs are believed to re
Effect of social instigation and aggressive behavior on hormone levels of lactating dams and adult male Wistar rats
Veiga, Caroline Perinazzo da;Aranda, Bruno Carlo Cerpa;Stein, Dirson;Franci, Celso Rodrigues;Miczek, Klaus A.;Lucion, Aldo Bolten;Almeida, Rosa Maria Martins de;
Psychology & Neuroscience , 2011, DOI: 10.3922/j.psns.2011.1.012
Abstract: among rodents, maternal aggression in the postpartum period represents a species-typical adaptation, but when aggressive behavior increases beyond this adaptive level, it can represent a model of excessive aggression. this study assessed the neuroendocrine response of lactating rats and socially instigated male rats. the aim of the present study was to assess neuroendocrine responses and the behavioral pattern of lactating rats and males that were subjected to an emotional stressor using the social instigation protocol. we measured plasma corticosterone levels as the key hormonal parameter of the hypothalamic-pituitary-adrenal (hpa) axis and oxytocin, prolactin, and progesterone, which are released in response to several types of stressors. our results showed that lactating rats that were subjected to only social instigation or aggressive confrontation in the presence of their pups had lower plasma corticosterone levels, and this response was similar to oxytocin, prolactin, and progesterone levels. by contrast, male rats showed increased corticosterone levels after being subjected only to social instigation. male rats also engaged in aggressive behavior compared with the control group. in conclusion, this study demonstrated that lactating rats subjected to social instigation exhibited an attenuation of the hpa axis response, which is considered to be crucial to the dam's welfare so that it can care for its offspring. thus, we can infer that lactation is a relevant factor in neuroendocrine responses to stress because of the increased levels of corticosterone in males.
Can Purified Omega-3 Polyunsaturated Fatty Acids Supplementation Act Blood Pressure Levels in Untreated Normal-High Blood Pressure Subjects with Hypertriglyceridemia?  [PDF]
Maria Leonarda De Rosa
Pharmacology & Pharmacy (PP) , 2012, DOI: 10.4236/pp.2012.32031
Abstract: Omega-3 (ω-3) polyunsaturated fatty acids (PUFAs) from fish and fish oils appear to protect against coronary heart disease: their dietary intake is in fact inversely associated with cardiovascular disease morbidity/mortality in population studies. Recent evidence suggests that at least a part of this protective effect is mediated by a relatively small but significant decrease in blood pressure (BP) level. In fact, omega-3 PUFAs exhibit wide-ranging biological actions that include regulating both vasomotor tone and renal sodium excretion, partly competing with omega-6 PUFAs for common metabolic enzymes and thereby decreasing the production of vasoconstrictor rather than vasodilator and anti-inflammatory eicosanoids. PUFAs also reduce angiotensin-converting enzyme (ACE) activity, angiotensin II formation. We retrospectively evaluated the long-term effect of a omega-3 PUFAs supplementation on the blood pressure level of 91 hypertriglyceridemic subjects with untreated normal-high blood pressure that were prescribed a 3 grams omega-3 PUFAs supplementation in order to improve their plasma lipid pattern. After 24 months of treatment, systolic blood pressure (SBP) meanly decreased by 2.6 +/- 2.5 mmHg (p = 0.001) and diastolic blood pressure (DBP) by 1.4 +/- 3.1 mmHg (p < 0.001), while basal heart rate decreased by 4.1 +/- 4.6 bpm (p < 0.001). Both SBP and DBP reduction were significantly related to the baseline SBP (p < 0.001) and DBP (p < 0.001), respectively. Diastolic blood pressure change was also inversely related to the patient’s age (p = 0.004). No significant difference was perceived in the metabolic syndrome subgroup. In our retrospective study, highly purified omega-3 PUFAs long-term supplementation is associated with a significant reduction in SBP, DBP, and basal heart rate in hypertriglyceridemic patients with normal-high blood pressure. The main determinants of the omega-3 PUFAs anti-hypertensive effect appear to be the basal blood pressure level and age. Future research will clarify if omega-3 PUFAs supplementation could improve the antihypertensive action of specific blood pressure lowering drug classes and of statins.
S o Paulo tasted slowly S o Paulo degustada aos poucos
Maria Zaclis Veiga Ferreira
Discursos Fotográficos , 2009,
Abstract: Resenha do Livro de: Aurélio Becherini (1879-1939). Textos: Rubens Fernandes Junior, ngela C. Garcia e José de Souza Martins. S o Paulo: Cosac Naify, 2009, 236 páginas.
Serum zinc and hormonal profile in male dialysis patients receiving human recombinant erythropoietin
Schleicher, Maria Mouranilda;Moura, Flávio José Dutra de;Diniz, Enzio Galv?o Torre?o Braz;Schleicher, Carlos César;Rosa, Tania Torres;Dorea, José Garrofe;Veiga, Joel Paulo Russomano;
Jornal Brasileiro de Patologia e Medicina Laboratorial , 2005, DOI: 10.1590/S1676-24442005000400005
Abstract: introduction: treatment with recombinant human erythropoietin (rhuepo) is associated with an improvement in well-being and quality of life in patients submitted to maintenance hemodialysis (hd). objectives: the goal of this work was to evaluate the levels of sex hormones, hematocrit, albumin and zinc in hd patients with rhuepo therapy and compare them with those observed in patients without rhuepo treatment. material and methods: two groups of twelve male hd patients each were selected for a transversal study; one did not receive rhuepo (group 1) whereas the other one did (group 2). levels of hematocrit, albumin, zinc, luteinizing hormone (lh), follicle-stimulating hormone (fsh), prolactin, and testosterone were determined. results: group 2 patients showed significantly higher medians (p < 0.05) of testosterone (4.65 vs. 3.5ng/ml), hematocrit (30.5 vs. 22%), albumin (3,9 vs. 3,7g/dl) and zinc (62.5 vs. 50.5microg/dl) than group 1 patients. discussion: in this study rhuepo treatment resulted in higher hematocrit, testosterone, zinc and albumin. it is suggested that, in patients recipients of rhuepo, higher levels of zinc and testosterone may be factors that contribute to relieve sexual dysfunction and improve quality of life. conclusions: in hd patients, hematocrit, albumin, serum zinc and testosterone levels were higher in rhuepo recipients when compared with patients not receiving this hormone therapy.
Peri-implantitis and periodontitis: Use of bacteriological test in dental practice  [PDF]
Francesco Carinci, Rosa Maria Gaudio
Forensic Medicine and Anatomy Research (FMAR) , 2013, DOI: 10.4236/fmar.2013.13010
Abstract: Peri-implantitis has been defined as an inflamematory condition involving dental implants, surrounding mucosa and bone, which lose supporting bone. Although high success rates for endosseous implants have been reported, failures occur, and some implants are lost or removed. At least 10% of the failures have been suggested to be the result of peri-implantitis. One of the major causes of the peri-implantitis is the bacterial colonization of implant surfaces but additional risk factors such as periodontitis, poor oral hygiene, tobacco consumption, prepost operative therapies and genetic susceptibility should be considered. In the present study a real-time PCR bases assay was designed to detect and quantify red complex species, then used to investigate 307 periodontal pocket samples from 127 periodontitis patients and 180 controls. Results demonstrated a significant higher prevalence of red complex species and increased amount of Porphyromonas gingivalis and Treponema denticolain periodontal pocket of periodontitis. Since a higher risk of peri-implantitis occurs in periodontally affected patients, detection and treatment of bacteria is a fundamental objective to ensure dental implant survival.
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